The Thunderstrike served the Sixty-First well through the Alliance's advancement into the Mid Rim and the Mid Rim Retreat when the Alliance ran back out again. During the Attack on Haidoral Prime, the GovernorEveri Chalis defected to the Sixty-First and was held in one of the Thunderstrike's airlocks. Following the Coyerti campaign, it suffered three separate attacks in the Metatessu sector and was leaking a trail from its Hyperdrive. In order to get the repairs it and the Apailana's Promiseattacked an imperial heavy freighter. During the raid, the Thunderstrike shot occasionally at the freighter to keep it in an unstable condition. The battle was cut short by the addition of an Imperial Gozanti Cruiser but the Thunderstrike received the supplies it needed.[2]

The Thunderstrike and the Apailana's Promise then rendezvoused to a Flotilla in the Elochar sector where they could get the repairs they needed. Howl meanwhile had gone to Echo Base on Hoth with Chalis to see the Alliance High Command. The engineers began repairs immediately and the soldiers went on patrols or shore leave to other ships. Captain So-Hem of the Sixmoon invited Sixty-First soldiers to visit his ship. A short while later the Trumpet's Call was over taken by Imperial spies. The Light freighter arrived to the flotilla with no life support and a lot of dead rebels and unconscious infiltrators. The Thunderstrike blindly took the spies in and when they regained mobility, they stormed into the bridge killing Howl's second in command LieutenantSairgon and the Naval OfficerCommanderPaonu. Sairgon, luckily, had sent a warning out to the flotilla and the ships retreated. The Sixty-First soldiers then regained control of the Thunderstrike and fled the system.[2]